Definition: The movement of a living thing towards or away from light.

Example: Many plants exhibit phototaxis by growing towards the sunlight.

Definition: A type of treatment that uses light to help heal certain health problems, especially skin issues.

Example: The doctor recommended phototherapy to treat her skin condition.

Definition: Causing the skin to become more sensitive to light, especially sunlight, which can lead to damage like sunburn or blisters.

Example: Some medications can be phototoxic, making your skin more vulnerable to sunburn.

Definition: A harmful reaction that occurs when the skin or body is exposed to light, particularly sunlight, often resulting in skin damage or other negative effects.

Example: Some medications can cause phototoxicity, leading to severe sunburns even with minimal sun exposure.

Definition: This word describes something that tends to move or grow in response to light, often used in relation to plants or organisms that react to light sources.

Example: Plants are phototropic, bending towards the sunlight to maximize their growth.

Definition: The way a plant or organism grows or moves in response to light, usually towards it.

Example: The sunflower exhibits phototropism by turning its head to follow the sun throughout the day.

Definition: A type of electron tube that has a photosensitive surface, which releases electrons when exposed to light.

Example: The scientist used a phototube to measure the intensity of the light in the experiment.

Definition: Relating to the generation of electricity from light, especially sunlight, through the use of certain materials that produce voltage when exposed to radiant energy.

Example: The new building is equipped with photovoltaic panels to harness solar energy.

Definition: The technology that converts sunlight into electrical energy.

Example: Many homes are now using photovoltaics to generate their own electricity from the sun.

Definition: A structure in plant cells that helps create a new cell wall during cell division.

Example: During cell division, the phragmoplast plays a crucial role in forming the new cell wall between the two daughter cells.